Year	% (modeled ILO estimate)
1991	34.643
1992	36.528
1993	36.632
1994	36.267
1995	36.32
1996	35.457
1997	36.282
1998	35.532
1999	35.604
2000	34.196
2001	33.226
2002	31.883
2003	29.908
2004	27.929
2005	28.363
2006	26.096
2007	26.176
2008	26.439
2009	26.178
2010	27.234
2011	25.896
2012	24.418
2013	28.25
2014	28.432
2015	30.134
2016	28.827
2017	30.879
2018	34.092
2019	30.912
2020	31.877
2021	32.282
2022	32.995
2023	32.723